Organoids As Model Systems For Human Development Disease And Clinical Applications

Organoid Technology for Disease Modelling and Personalised Treatment provides a comprehensive overview of current knowledge of the organoid as a human-organ-in-a-dish, a powerful new technology for studying fundamental aspects of human organ development and disease progression in the search for drugs for personalised treatment. This preclinical tool is extensively being utilised as a model for studying human diseases in a dish, which is critical for accurate predictive modelling in precision medicine. The chapters in this book introduces readers to the numerous applications of organoids in various fields of study, as well as ethical considerations associated with organoids. In stem cell biology and regenerative medicine, where chimaera research, biomaterials for tissue vascularisation, gene-editing technologies, and their use in clinical procedures especially issues related to ethical concern over the use of human organoids have gotten much attention. Organoid Technology for Disease Modelling and Personalised Treatment is an excellent resource for in-depth research on one of the most interesting and significant topics in stem cell and regenerative medicine. This book's chapter collection covers a fresh viewpoint on organoid technology that scholars will require reading.

Cancer cell biology research in general, and anti-cancer drug development specifically, still relies on standard cell culture techniques that place the cells in an unnatural environment. As a consequence, growing tumor cells in plastic dishes places a selective pressure that substantially alters their original molecular and phenotypic properties.The emerging field of regenerative medicine has developed bioengineered tissue platforms that can better mimic the structure and cellular heterogeneity of in vivo tissue, and are suitable for tumor bioengineering research. Microengineering technologies have resulted in advanced methods for creating and culturing 3-D human tissue. By encapsulating the respective cell type or combining several cell types to form tissues, these model organs can be viable for longer periods of time and are cultured to develop functional properties similar to native tissues. This approach recapitulates the dynamic role of cell–cell, cell–ECM, and mechanical interactions inside the tumor. Further incorporation of cells representative of the tumor stroma, such as endothelial cells (EC) and tumor fibroblasts, can mimic the in vivo tumor microenvironment. Collectively, bioengineered tumors create an important resource for the in vitro study of tumor growth in 3D including tumor biomechanics and the effects of anti-cancer drugs on 3D tumor tissue. These technologies have the potential to overcome current limitations to genetic and histological tumor classification and development of personalized therapies.

A discussion of all the key issues in the use of human pluripotent stem cells for treating degenerative diseases or for replacing tissues lost from trauma. On the practical side, the topics range from the problems of deriving human embryonic stem cells and driving their differentiation along specific lineages, regulating their development into mature cells, and bringing stem cell therapy to clinical trials. Regulatory issues are addressed in discussions of the ethical debate surrounding the derivation of human embryonic stem cells and the current policies governing their use in the United States and abroad, including the rules and conditions regulating federal funding and questions of intellectual property.

One of the biggest challenges faced in medical research had been to create accurate and relevant models of human disease. A number of good animal models have been developed to understand the pathophysiology. However, not all of them reflect the human disorder, a classic case being Usher’s syndrome where the mutant mice do not have the same visual and auditory defects that patients face. There are others which have been even more difficult to model due to the multi-factorial nature of the condition and due to lack of discovery of a single causative gene such as age-related macular degeneration or Alzheimer’s syndrome. Thus a more relevant and accurate system will allow us to make better predictions on relevant therapeutic approaches. The discovery of human pluripotent stem cells in 1998 followed by the technological advances to reprogram somatic cells to pluripotent-stem cell-like cells in 2006 has completely revolutionized the way we can now think about modelling human development and disease. This now coupled with genome editing technologies such as TALENS and CRISPRs have now set us up to develop in vitro models both 2D as well as 3D organoids, which can more precisely reflect the disease in the patients. These combinatorial technologies are already providing us with better tools and therapeutics in drug discovery or gene therapy. This book summarizes both the technological advances in the field of generation of patient specific lines as well as various gene editing approaches followed by its applicability in various systems. The book will serve as a reference for the current state of the field as it: -Provides a comprehensive overview of the status of the field of patients derived induced pluripotent stem cells. -Describes the use of cardiac cells as a main featured component within the book. -Examines drug toxicity analysis as a working example throughout the book.

Advances in Stem Cells and Their Niches addresses stem cells during development, homeostasis, and disease/injury of the respective organs, presenting new developments in the field, including new data on disease and clinical applications. Video content illustrates such areas as protocols, transplantation techniques, and work with mice. Explores not only reviews of research, but also shares methods, protocols, and transplantation techniques Contains video content to illustrate such areas as protocols, transplantation techniques, and work with mice Each volume concentrates on one organ, making this a unique publication

The Transformational Medical Technologies (TMT) has been a unique component of the U.S. Department of Defense (DoD) medical biodefense efforts since 2006. Its mission is to advance countermeasure research and development in support of the broader goal of the DoD to protect warfighters from emerging infectious diseases and future genetically engineered biological weapons. The TMT, using advanced science and technology approaches, focused on the development of roadspectrum countermeasures that target common host and pathogen pathways or enhance the host's immune response. Many of these pathogens are lethal or cause such debilitating diseases in humans that it is ethically inappropriate to test the efficacy of these countermeasures in human volunteers. In lieu of human participants, these products may be tested in animals and approved for human use under the provisions of the Food and Drug Administration (FDA)'s 2002 Animal Rule. The reliance on animal models for the development and licensure of medical countermeasures against biothreats is challenging for a number of reasons. The ad hoc Committee on Animal Models for Assessing Countermeasures to Bioterrorism Agents prepared a consensus report that would address the challenges stemming from developing and testing medical countermeasures against biothreat agents in animal models. Animal Models for Assessing Countermeasures to Bioterrorism Agents evaluates how well the existing TMT-employed or candidate animal models reflect the pathophysiology, clinical picture, and treatment of human disease as related to the agents of interest. The report addresses the process and/or feasibility of developing new animal models for critical biodefense research, placing emphasis on the need for a robust and expeditious validation process in terms of the FDA's Animal Rule. The report also evaluates alternatives to the use of animal models based on the premise of the Three Rs.